Leinewelle, River surfing spot in Old Town, Hanover, Germany.

Leinewelle is a river surfing facility on the Leine River in Hanover's Old Town, where hydraulically controlled steel structures generate a standing wave in the water. The wave stays fixed in one spot, letting surfers ride it continuously without moving downstream.

First plans for a surf wave in the Leine, initially near the Leineschloss, date from 2013; the initiator was Hanover businessman Heiko Heybey, who founded the supporting association Leinewelle e. V. The Region Hannover granted the water-law permit in 2019, against which the Fischereiverein Hannover sued unsuccessfully before the Verwaltungsgericht and later the Niedersächsische Oberverwaltungsgericht. Construction began in June 2021, the three steel wave bodies were installed in August 2022, and the official opening took place on 28 April 2023.

The spot has become a meeting point for surfers and onlookers alike, with people gathering along the riverbank to watch riders on the wave. Those who are not surfing often sit on the steps near the water and enjoy the scene.

The facility sits in the center of the Old Town and is easy to reach on foot or by public transport from the city. Water levels affect whether the wave is running, so it is worth checking before you go.

The steel structures can be moved into different positions to change the shape and strength of the wave depending on how much water flows through the river. This means the facility can stay in use even when the Leine runs higher or lower than usual.